When an atom is in the ground state what must happen for the atom to be in an excited state? what must happen for this atom to return to the ground state?

Explain what happens at the saturation point when adding salt to water at room temperature.

Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?

Ascientist conducted an experiment and discovered that certain plants grow faster when given a particular amount of fertilizer. anouther scientist conducted the same experiment and got similar results. which concept does this best illustrate? a) repetition b) replication c) precision d) validity